How often does a breathalyzer need to be calibrated?

A breathalyzer should be regularly calibrated to ensure accurate and reliable results. The frequency of calibration depends on the device and its intended purpose. For personal or consumer-grade breathalyzers, it is generally recommended to calibrate every 6 to 12 months or after approximately 200 uses. Professional-grade breathalyzers used by law enforcement, healthcare providers, or for legal purposes may require more frequent calibration, typically every 3 to 6 months. Regular calibration is crucial as it verifies the sensor's accuracy, accounts for drift over time, and maintains credibility. Failure to calibrate can lead to false readings and compromised judgment. Professional calibration services are available, often through the device’s manufacturer or authorized service centers. Some breathalyzers offer user-replaceable sensor modules, ensuring convenience and minimizing downtime. Remember, following the manufacturer's guidelines and respecting the recommended calibration schedule will ensure the breathalyzer continues to provide accurate alcohol measurements.